Which statement is correct regarding a catalyst?

  • A
    $A$. $A$ catalyst can initiate a reaction.
  • B
    $B$. $A$ negative catalyst can decrease the activation energy.
  • C
    $C$. $A$ catalyst cannot change the enthalpy of reaction.
  • D
    $D$. $A$ catalyst increases the rate of forward reaction and decreases the rate of the backward reaction for a reversible reaction.

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Similar Questions

The ability of a catalyst to accelerate the chemical reaction is known as

Match List-$I$ with List-$II$.
List-$I$ List-$II$
$A$. $4NH_{3(g)} + 5O_{2(g)} \rightarrow 4NO_{(g)} + 6H_2O_{(g)}$ $I$. $NO_{(g)}$
$B$. $N_{2(g)} + 3H_{2(g)} \rightarrow 2NH_{3(g)}$ $II$. $H_2SO_{4(l)}$
$C$. $C_{12}H_{22}O_{11(aq)} + H_2O_{(l)} \rightarrow C_6H_{12}O_6 + C_6H_{12}O_6$ $III$. $Pt_{(s)}$
$D$. $2SO_{2(g)} + O_{2(g)} \rightarrow 2SO_{3(g)}$ $IV$. $Fe_{(s)}$

Choose the correct answer from the options given below.

The decomposition of $H_2O_2$ can be slowed by the addition of a small amount of acetamide. The latter acts as a

The catalyst and promoter respectively used in the Haber's process of industrial synthesis of ammonia are

Match List-$I$ with List-$II$.
List-$I$ (Processes/Reactions) List-$II$ (Catalyst)
$A. 2 SO_{2(g)} + O_{2(g)} \rightarrow 2 SO_{3(g)}$ $I. V_{2}O_{5}$
$B. 4 NH_{3(g)} + 5 O_{2(g)} \rightarrow 4 NO_{(g)} + 6 H_{2}O_{(g)}$ $II. Pt_{(s)}-Rh_{(s)}$
$C. N_{2(g)} + 3 H_{2(g)} \rightarrow 2 NH_{3(g)}$ $III. Fe_{(s)}$
$D. \text{Vegetable oil}(l) + H_{2} \rightarrow \text{Vegetable ghee}(s)$ $IV. Ni_{(s)}$

Choose the correct answer from the options given below.

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